One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,8)(5,7)(10,14)(11,12)(17,18,21,26,22,24,31,25)(19,20,28,30,27,23,32,29)(1,2,6,3)(4,7,5,8)(9,10,13,14)(11,16,12,15)(17,19)(18,23)(20,24)(21,28)(22,27)(25,30)(26,29)(31,32)(1,3,6,2)(4,7,5,8)(9,11,13,12)(10,15,14,16)(17,20)(18,19)(21,29)(22,23)(24,27)(25,28)(26,32)(30,31)(1,4,6,5)(2,7,3,8)(9,12,13,11)(10,15,14,16)(18,24)(19,27)(25,26)(28,32)(1,5,6,4)(2,7,3,8)(17,21,22,31)(18,25,24,26)(19,28,27,32)(20,29,23,30)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.